Home / 268,420.51-370,429.83-153,719.65

Finding the Fourth Proportional to 268,420.51, 370,429.83 and 153,719.65

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Solution

The fourth proportional to 268,420.51, 370,429.83 and 153,719.65 is: 212,138.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,420.51 : 370,429.83 = 153,719.65 : x
  2. Step 2: Convert to fraction form
    268,420.51/370,429.83 = 153,719.65/x
  3. Step 3: Cross multiply
    268,420.51x = 370,429.83 × 153,719.65
  4. Step 4: Simplify right side
    268,420.51x = 56,942,342,891.08
  5. Step 5: Solve for x
    x = 56,942,342,891.08/268,420.51
  6. Step 6: Final answer
    x = 212,138.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.